670 weeks ago from today was 24 Jan 2012, a Tuesday. Anytime we’re subtracting halves of the year, we need to ensure that we’re still in 2024. It looks like 670 weeks from now will bring us back to pre 2023 and we’ll need to factor this into our subtraction because it will change the calendar and fiscal years. For larger calculations like this, I start by subtracting total days, then counting backwards 4690 days on a calendar until getting my solution of Tuesday January 24, 2012.
All of our day calculators are measured and QA'd by our engineer. Read more about the Git process here. But here's how 670 weeks ago gets calculated on each visit:
670 weeks is Tuesday January 24, 2012 or could be if you only want workdays. This calculation takes 670 weeks and only subtracts by the number of workdays in a week. Remember, removing the weekend from our calculation will drastically change our original Tuesday January 24, 2012 date.
Work weeks Solution
Monday
670 weeks back
Tuesday
January 24
Wednesday
Thursday
Friday
Saturday
Sunday
Counting back from today is Tuesday January 24, 2012 using a full calendar, and is also 112560 hours ago and 6.58% of the year.
Tuesday Tuesday January 24, 2012 was the 024 day of the year. At that time, it was 6.58% through 2012.